288 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 

 Analysis of species of Hwmulon — Contiuued. 



u. Body oblong, the depth 3 in length ; snout short ; 

 mouth small, the maxillary reaching mid- 

 dle of the small eye, its length 2^ in head ; 

 eye large ; iius low ; first soft rays of anal 

 scarcely reaching beyond tips of last rays ; 

 second anal spine little larger than third, 

 2|- in head ; fourth dorsal spine, 2 ; sides with 

 alternate stripes of dark brown and light 

 grayish, the latter formed by a light pale 

 spot on the center of each scale; a dark 

 blotch at base of caudal ; vertical fins gray. 



Maculicauda, 20. 



1. Haemulon sezfasciatum. 



EcBmulon sexfasciaius, Gill, Proc. Ac. Nat. Sci. Phila., 1862, 254 (Cape San 

 Lucas) ; Steindachnkr, Ichth. Beitr. iii, 13, 1875 (Panama). 



Diaiasis sex/asciatus, Jordan and Gilbebt, Bull. U. S. Fish Comm., 1881,324, 

 1882, 107, 110 (Mazatlan, Panama) ; Jordan & Gilbert, Proc. U. S. Nat. 

 Mus., 1882, 361, 372, 626 (Cape San Lucas, Colima, Panama) ; Jordan, 

 Proc. Ac. Nat. Sci. Phila., 1883, 286 (on Peters's type of maculosum). 



B(emnlon macwZo-SMm, P:^ters, Berliner Monatsberichte, 1869, 705 (Mazatlan), 



Habitat. — Pacific Coast of Tropical America, Caj^e Sau Lucas to Pan- 

 ama. 



Head, 3 in length of body, 3f in total length with caudal; depth, 

 2f (3^). D. XII, 17. A. Ill, 9. Scales, * 6-51-14. Length (30997, 

 Colima), 8 inches. 



Form of Hcemnlon gibhosum : Body comparatively deep, the back 

 elevated and compressed, the anterior profile steep and nearly straight 

 from tip of snout to above eye, where a slight angle is formed, thence 

 rising more steeply and forming a somewhat steep curve before the dor- 

 sal. Snout pointed, of moderate length, 2f in head (in specimen 8 inches 

 in length) ; proportionately longer in the adult. 



Mouth not very large, the maxillary reaching front of eye in young 

 (8 inches), not nearly reaching eye in adult; its length 2^ to 2f in head, 

 lower jaw included. Teeth rather slender, the antrorse teeth of pos- 

 terior part of lower jaw inconspicuous. Eye small (4i in head in young 

 of 8 inches). Interorbital space convex, about 4 in head. Preorbital 

 deep, its least depth greater than length of eye in adult, 4| in head in 

 young (8 inches). Preopercle finely and rather sharply serrate. Gill- 

 rakers small, about 12 below angle. 



* In this paper the scales above the lateral line are counted vertically from the first 

 dorsal spine to the lateral line ; those below the lateral line from the first anal spine 

 obliquely upward and forward to the lateral line. The scales in a longitudinal series 

 are, as here given, the number of vertical rows above the lateral line from head to 

 base of caudal. This number is practically the same in all si)ecie8 of the genus, the 

 variations above or below 50 being slight. The number of oblique series of scales, or 

 of pores in the lateral line is in all cases about ten fewer, or about 40. 



